Optimization of ultrasound assisted green solvent extraction of polyphenols from mango 'criollo' by-products

Resumen del póster presentado al 14th World Congress on Polyphenols Applications

[Introduction]: Mango (Mangifera indica) 'Criollo' is found in the northeast region of Argentina. These under commercialized fruit can be exploited as a source of bioactive compounds. The objective was to optimize the ultrasound assisted extraction of phenolic compounds from mango 'Criollo' (MC) using a green solvent

[Material and Methods]: Fully ripped fruit (n=50) were harvested in Corrientes, Argentina. Three products were obtained: MC peel (MCP), MC pulp (MCPu) and MC seed (MCS). A three level-variable central composite design was used (60 experiments). Ultrasound generator equipment was used (500 Watts-20 kHz). Total phenolic content (TPC) and phenolic profile by HPLC-ESI-QTOF-MS/MS were determined.

[Results]: TPC in MCP was maximized with 6.5 minutes, amplitude 60% and ethanol content 46%. The extraction from MCPu required 30 minutes, amplitude 75% and ethanol content 25%. MCS required 20 minutes, amplitude 100% and ethanol content 49%. HPLC analysis indicated that mangiferin was present in the three sections showing higher concentration in MCP. It was remarkable the high concentration of ellagic acid in MCS.

[Conclusion]: Underused mango 'Criollo' can be employed as a source of powerful antioxidant phenolic compounds by an adequate selection of extraction variables to achieve maximum yield from each section of the fruit.

Supported by This study has been funded by the Spanish State Agency of Research of the Ministry of Science, Innovation and Universities (PID2019-107980RB-100 / AEI /10.13039/501100011033). Dr. Ojeda thanks the Carolina Foundation for the grant received.

Peer reviewed